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UNITED STATES PATENT OFFICE.

CHARLES A. SEELEY, OF NEV YORK, N. Y.

ARMATURE FOR- MAGNETO-ELECTRIC MACHINES.

SPECIFICATION forming part of Letters Patent No. 229,191, dated June 22, 1880.

' Application filed September 10, 1879.

To all whom it may concern:

Beit known that I, CHARLES A. SEELEY, of the city of New York, have invented a new and useful Improvement in Armatures ot' Magneto-Electric Machines, of which the following is a specification.

My invention consists in the arrangement of the elements of the armature so that the whole assumes the form of a revolving disk, the whole space of which shall be occupied and filled out by the said elements. In short, it may be considered a modification of what is known as Aragos disk,77 whereby the induced currents are rendered utilizable.

In the common form of the disk experiment the induced currents iind in the matter of the disk direct paths of reunion, and thus the electricity is almost wholly transformed into heat, while in my disk-armature the currents produced in precisely the same conditions are kept apart and carried away for use. I secure the result by suitably constructing the disk of insulated wire.

In the magneto-electric machine my armature revolves in magnetic elds arranged radially with reference to the axis of' the armature.

If a vertical Wire be moved in front of a north magnetpole to the right the induced current tends upward, and it' a vertical wire be so moved before a south magnet-pole the induced current tends downward; also, if the Wire bc moved to the left before the poles the current will tend in reverse directions.

In Fig. 4 a wire is represented as bent so that a large part of its course is on radial lines. Now, if there be placed behind the wire at A and O north magnetpoles and behind B and D south magnetpoles, and then the wire be revolved on its horizontal axis at E in the direction of the hands of a watch, the induced current throughout the whole length of the wire will tend in the direction shown by the arrow until in its revolution the wire comes under the controlling influence of poles of opposite name, when the current will be reversed. In the arrangement shown in Fig. 4 the current will undergo four reversals in the complete revolution, and the changingpoints will be half-way between contiguous poles.

lt is evident that by increasing the number vof magnet-poles and the corresponding radial wire turns, the electric changes will be increased; also, that the amount of electric induction will be increased by increasing the number of wires. A

My disk-armature, then, consists essentially of wire wound in radial directions, so that the radii entering on winding may be moved before magnet-poles of the same name, while the radii outgoing move before the opposite poles. [t is to be understood that the whole mass of the disk, so far as is practicable, shall be filled out or made up of the radial winding, and that the sectors of out-and-in wires shall be equal in number and symmetrical in form and arrangement.

One of the simple methods of winding is shown in Fig. 3, where the radii at the left are entering and the radii at the right are outgoing. In this case the wire tills out a sector of one-sixth of the circle, and six similar sectors are required for the completion of a diskarmature.

rllle plan of winding, as shown in Fig. 3, may be carried out, so that any sector of a circle may be filled out or even a complete circle, in which last case one-halt' of the radii would be ingoing and one-half outgoing.

Another plan of winding is to continue the wire across or beyond the center of the circle, bending the wire away from the center in order to leave place for the axis, and continuing it upon a diameter and returning it upon a new diameter, so on until desired sectors or the whole circle are filled. In this plan the diametrical wires cross each other near the axis.

Figure 1 is a plan View of my armature, and FiO. 2 is a section of the same through its center.

A is the axis; B, the radial part of the winding. I) D are parts of the winding other than the radial. E E are circular plates of metal or other suitable material, which serve to bind together in place 1:he inner sides of sectors of wire; and O O are two hat rings, which serve to bind in place the outer sides of sectors.

In Fig. 2, N N S S are four magnet-poles in proper position in relation to the armature. There may be as many pairs of field-magnet IOO poles as there are pairs of sectors of in-andout radial wires; but as with other armatures, and for similar reasons, the number of pairs of poles may not be equal to the number of pairs of sectors.

The sectors of my armature stand in the same relation to the field-magnets as do the components of other armatures, and are susceptible of many ot' the well-known modifica tions of arrangement. The sectors may be considered as having the oiice of helices of ordinary construction.

It will now be readily understood that my sectors may be connected in series or in multiple are, and that a commntator of ordinaryT construction is to be used with them.

None of the plans of connection are shown in the drawings, for the reason that they are well known to those skilled in thevart.

In the description thus far the sectors and the completed diskarmature are supposed to be made up of a single layer of wire; but two or more layers may often be used to advantage. The wire circles of two or more singlelayer armatures may be united face to face; or sectors may be made having two or more layers ot' wire, and these be then combined for an armature. In any case the layers may be united in multiple arc or in series. In the place of wire, insulated copper ribbon may be used to advantage, and the width of the ribbon will determine the thickness ot' the disk.

'lo secure the required rigidity and strength of my armature, I rely mainly upon the ilat binding-rings and the circular plates; but for a further means I ll up the interstices of the radial part of the winding with glue, shellac, or other similar substance; also, braces bc tween the binding rings and the circular plates may be arranged at the joints of the sectors; also, it is well to cement on the faces It will be observed that it is only that part of the wire of my armature which lies in the radial direction which is efficient in the electro-magnetic induction, while the remainder, which lies circumferentially, serves only as connectors for the radii.

The distinction of efficient or radial7 and connect-ing or curved are of great assistance to the proper understanding of my inven* tion.

Radial wire only should be comprised within the magnetic iield, and the space of the iield, so far as is consistent with the free movement of the armature, should be occupied by the efiicient wire. The connecting-wire, on the other hand, should lie wholly beyond and without the magnetic iield, and should serve as the means, in conjunction with the clampingrings C G and E E, of giving strength and rigidity to the whole structure.

The armature is to be attached to the axis by means of keys, bolts, or otherknown devices.

One of the important peculiarities oi' my disk-armature is the filling out with radial wire the spaces which correspond to the corespaces of machines of the alliance class and the spaces between contiguous helices.

I do not claim herein a magneto-electric machine with diskarmature when the ehcient wire ofthe latter is comprised within the magnetic iield and the connecting-wire lies without the magnetic field, as I shall make such matter the subject of separate application li'or patent.

I claim- 1. rIhe combination ofthe binding-ring and binding-circles with the winding of the armature, as described.

2. The disposition of the eflicient wire ot' the disk-armature in radial directions and with uniform spacings with inclined sides, as de-v scribed.

3. A diskarmature in which the core-spaces and the spaces between contiguous elements are occupied by efficient wire.

CHARLES A. SEELEY.

Witnesses:

FRANK DIBBEN, O. H. Homsnne. 

